对催化裂化装置使用终止剂技术的认识  

Analysis of applying quench technology in FCCU

作　　者：毛安国[1] 常学良[1] 顾洁[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石化技术与应用》2003年第4期276-278,共3页Petrochemical Technology & Application

摘　　要：介绍了催化裂化装置终止剂的类型、用量和注入位置等因素在催化裂化反应过程中的作用。在工业装置上考察了终止剂用量和终止剂的注入位置对产物分布、汽油的性质和气体烯烃浓度的影响。结果表明 :在控制相近的重油转化深度下 ,终止剂用量占处理量 1 %、1 0 %和 1 6%时 ,焦炭和干气产率均先降低后增加 ,汽油中烯烃含量和C3 中烯烃质量分数则分别降低 2 .0和 1 .2个百分点 ,汽油中异正构烷烃比增加 ,二烯值降低 ,诱导期增加超过 1 0 0min ;终止剂注入点由提升管中部移至上部而其他条件不变时 ,汽油中烯烃和C3 中烯烃质量分数分别增加 4.2和 0 .The action of the type,amount and injecting location of quench medium on the reaction process was introduced.The effect of the rear two factors on the product distribution,olefinic content in gasoline and C 3 olefinicity in the commercial FCCU was investigated.The results showed that the yields of coke and dry gas decreased first and then increased ,and olefinic content in gasoline and C 3 olefinicity decreased by 2.0% and 1.2% respectively at the similar heavy oil conversion when the amount of quenching medium increased from 1% to 16% on fresh feed.With changing the injecting location from mid to top portion of the riser reactor and keeping other conditions fixed,the olefinic content in gasoline and C 3 olefinicity increased by 4.2% and 0.6% respectively.

关 键 词：催化裂化 终止剂 氢转移 异构化 

分 类 号：TE624.41[石油与天然气工程—油气加工工程]